@article{10_4064_cm_34_2_219_222,
     author = {W. Kulpa},
     title = {On a generalization of {Dugundji} extension theorem},
     journal = {Colloquium Mathematicum},
     pages = {219--222},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1975},
     doi = {10.4064/cm-34-2-219-222},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-34-2-219-222/}
}